Not the topmost priority IMHO, but we should keep in mind that not everyone is quite well at reading and understanding English. I'm especially thinking of users that aren't software developers for ages, but maybe newcomers that are doing their first-time contribution or team members that don't do code work and want to look something up in the docs.
For sure, there will be much more users profiting from a translated documentation.
So if someone has got an idea on how we could manage translation of our static documentation, this would be really neat!